Improvement in the manufacture of  hollow glassware



` UNrren trice.

J. S. ATTERBURY, T. B. ATTRBURL AND JAMES REDDICK, 0F PITTSBURG,PENNSYLVANIA.

IMPROVEMENT 5N 'l'll NUFACTURE OF HOLLOW GLASSWARE.

SPeelcation ibrming part of Letters Patent No. 35,4!!30., dated June 3,1862.

.To 1,25 107mm, it muy @citeer-n:

Be it known that we, i?. S. ATTERBURY, T. B. AT'rEanUeY, and JAMESBicchieri, of Pittstmrg.` iu the county of Allegheny and State ofFennsylvania, have produced a new and Improved ltaunfacture ol" Plain orSmootli-Surfaced Orti-.unented Glassware; and we do hereby declare thatthe following is a full description of the same,`rel'erence being had tothe accompanying drawings, forming part of this specification, in which-Figures l, 2, and 3are elevations and a borizontal section of specimensof our improved new manufacture of glassware. Figs. 4, 5, 6, and 7 showmeans adapted for producing such specimens of hollow glassware with orwithout handles.

The usual method of producing ornaments upon glassware is by cutting orpressing the surface of thc glass into various shapes. This not onlyleaves that surface uneven,so that it is not readily kept clean andpolished, but the strength of the ware is thereby minished.

Our invention consistsin producing the appearance of cut or ornamentalpressed glass, while the surface is left smooth, so as to be readilycleansed, and While t-hestrength of the ware is not essentiallylessened.

We have ascertained that when figures or ornaments are formed on onepiece of transparent glass by cutting or pressing the same, and when aportion of glass equally transparent is afterward made plastic by heatand then pressed o`r embedded into the first piece, so that the groovesand cavities formed therein are completely lled with the plasticglass,although the two parts are so thoroughly incorporated as topossess nearly or quite the same greatly distrength as though the glasshad originallyV been formed of one entire piece,and although the outerand opposite surfaces of this combined piece of glass are entirelysmooth, still without the interposition of any other material the formand appearance of the figures and ornaments are found to vremain just asdistinct as they were before the plastic glass was pressed and embedded,as described. Upon this principle we construct glassware which is smoothupon the surface, but which shall have the appearance or" having beenornamented by cutting or pressing to any desired degree, and which,while it is equal in beauty, is far superior in convenience aud strengthto cut or pressed glass.

To enable others skilled in the art to make our new manufacture, we willproceed to describe such means and methods as we have foundpracticallyuseful in its production, the said means and methods having been.patented to ns ou the 11th of February, 1862. y

In producing a lamp-bowl or peg 7 with a solid wall, plain inner andouter surfaces and ornaments between such surfaces, as illustrated inFigs. 1,2, and 3, an open-top flask, A, is used, said ask being in twoparts and opening on a hinge and shaped internally to the form ofthelower part of lamp-bowl. Into this dusk melted glass is poured, and asolid plunger with thc ornamental design wrought upon its surface andcorresponding in shape and size to the interior of the lower portion ofthe desired lamp peg or bowl is pressed down upon the glass in the moldor flask. This operation produces an ornamentation and gives form to theglass, as illustrated in Fig 4. Another two part dask, B,opening onahinge and made open at bottom,and with an orifice, a, in its top, isnowplaced upon the flask A. This flask B eoresponds internally to the upperportion of the lamp bowl or peg, as Will be seen in Figs. 5 and 6. Theblower now gathers on his blow-pipe a quantity of `glass and brings itto a proper form for blowing a coating over the ornamented surface ofthe partly-formed lamp-peg, (shown in Fig. 4,) and finishing the upperpart of the lamp peg or bowl. This he places iu the mold, Fig. 4, uponthe device therein formed, and having closed the ask B upon the same,blows with with his blow-pipe upon the lump of glass until theornamented surface is coated over and the upper portion of the articlenished, as illustrated in Fig. 5. The result is a lamppeg, C or D,accordingly as the surface of the device E was ornamented.

Instead of blowing the top portion of the lamp bowl or peg, theornamented surface of the device E, Fig. 4, may be coated over byblowing glass upon it, and the top portion of the lamp-peg produced byheating the upper daring edge of the lower portion and manipuwill beevident from Fig. 7.

latinglthe glass with shears-ordinary tools in the eoinmon method. .Themold or ask A in this ease must be of such depth and forml lamp-pegshown in Figs. 1 and 2, and there fore in Fig. 7 a mold for a `differentstyle of article is shown.

In the manufacture of open flared-mouthed articles-such as goblcts-thesame process may be followed in the coating over of the ornaments; butthese articles must be warmed over the fire and their` mouths flared andlinishedin theold way.

We have described and shown particularly but one style of article andtwo characters of ornamental design; but it is obvious that the improvednew manufacture can be extended to a great variety of articles by simplymaking changes in the mold and inthe character of the design, andstillfollowing the principle of operation set forth.

Our improved manufacture is very important, as it presents plain innerand outer sur-y faces and still appears as though the surfaces werechanneled, flowered, or otherwise beautied with elevated or depressedornaments, and by being thus plain-surfaced dirt cannot collect upon itsornaments, and the articles are less difficult to clean; nor are thedesigns o'r figures, when on the inner surface -of the articles, injuredin their effect upon the eye by the contact of oil or other duid withthem. The articles are also stronger and made at less cost, Vby reasonof their walls being solid or the ornaments and component glass thereofunited upon-and to the component glass of the articles as one solidmass.

What we claim as ourinventiou, and desire to secure by Letters Patent,-is- A new manufacture of glassware, which while it shall have smoothsurfaces both without and within, and while its internal structure isentirely solid without any open spaces or interstces left therein, shallpresent the appearance' of cut or pressed glass, substantially as andfor the purpose above described.

' J. S. ATTERBURY.

T. B. ATTERBURY. JAS. REDDICK.

Witnesses:

A. B. STEVENsoN, JOHN C. STEvENsoN.

